According to The Oxford Dictionary for Writers and Editors, plural of motto is mottoes.
That is the correct spelling of "motto" (slogan).
The plural way to spell studio is studios.
The plural is cantaloupes.
The plural is "emeralds."
The plural is roses.
The plural of motto can be either mottos or mottoes.
mottoes
That is the correct spelling of "motto" (slogan).
The plural is hooves.
The plural is cherries.
The plural is cantaloupes.
The plural is resources.
The plural is "emeralds."
The plural is roses.
The plural way to spell studio is studios.
The plural is bridges.
The motto of Spelling Television is 'Spell your entertainment'.